I searched my font archive and looked around a bit on the net but couldnt find anything 4th gen style. A few where similar but nothing close enough. Ironically I have an actual 3rd gen pontiac font that is exact, from carfonts.com, but they have nothing 4th gen.

I dont know if this will help in searching for the font, but the Pontiac Sunfire uses the same font as the 4th gen emblems.

If you are just wanting some 4th gen style Formula logos as stickers instead of emblems you might be better off getting an emblem off a car at the salvage yard, painting it black and sticking all it properly spaced out to a sheet of white paper. Then pop it in the scanner and use photoshop or something to clean up the image a little, so its a simple black logo on white background. Print that out as a template for your decal machine.

If you are wanting the font to write other words with, possibly your only option would be to make your own 4th gen font using the existing firebird and sunfire emblems as a guide for letter style. I have done this to get fonts for other things, but man is it a mega pain in the rectum.